摘 要
随着全球能源需求的持续增长以及可再生能源的大规模接入，传统电力系统面临灵活性与稳定性不足的问题，柔性直流输电技术（VSC-HVDC）因其卓越的控制性能和适应性成为现代电网发展的重要方向。本研究以柔性直流输电技术在电力系统中的应用为切入点，旨在探讨其在提升电网稳定性和促进新能源消纳方面的潜力。通过理论分析、仿真建模和实际案例研究相结合的方法，本文详细评估了柔性直流输电在多场景下的运行特性及其对系统动态行为的影响。研究结果表明，柔性直流输电技术能够有效解决交流电网中功率传输受限、电压不稳定等问题，并显著提高新能源并网的兼容性。此外，本文提出了一种基于改进下垂控制策略的优化方法，该方法在保证系统稳定性的前提下进一步提升了功率分配的精确度与响应速度。这一创新点为复杂电网环境下的柔性直流输电控制提供了新的思路。最终结论显示，柔性直流输电技术不仅具备强大的技术优势，还能够在未来智能电网建设中发挥关键作用，为实现高效、可靠的电力传输提供重要支撑。本研究的主要贡献在于明确了柔性直流输电技术的实际应用价值，并通过技术创新为其推广奠定了理论基础。
关键词：柔性直流输电技术；新能源消纳；电网稳定性；改进下垂控制策略；功率分配优化
ABSTRACT
With the continuous growth of global energy demand and the large-scale integration of renewable energy, traditional power systems are facing challenges related to insufficient flexibility and stability. Voltage Source Converter-based High Voltage Direct Current (VSC-HVDC) technology has emerged as a critical direction for modern grid development due to its superior control performance and adaptability. This study focuses on the application of VSC-HVDC technology in power systems, aiming to explore its potential in enhancing grid stability and promoting the accommodation of new energy sources. By integrating theoretical analysis, simulation modeling, and case studies, this paper comprehensively evaluates the operational characteristics of VSC-HVDC under multiple scenarios and its impact on system dynamic behavior. The results indicate that VSC-HVDC technology can effectively address issues such as power transmission constraints and voltage instability in alternating current grids while significantly improving the compatibility of new energy grid integration. Furthermore, an optimized method based on an improved droop control strategy is proposed, which enhances the accuracy and response speed of power distribution while ensuring system stability. This innovation provides a novel approach for VSC-HVDC control in complex grid environments. The final conclusion demonstrates that VSC-HVDC technology not only possesses significant technical advantages but also plays a key role in the construction of future smart grids, offering crucial support for efficient and reliable power transmission. The primary contribution of this study lies in clarifying the practical application value of VSC-HVDC technology and establishing a theoretical foundation for its promotion through technological innovation.
Keywords: Flexible Dc Transmission Technology; New Energy Accommodation; Power Grid Stability; Improved Droop Control Strategy; Power Allocation Optimization
目 录
摘 要 I
ABSTRACT II
第1章 绪论 1
1.1 柔性直流输电技术的研究背景 1
1.2 柔性直流输电技术的应用意义 1
1.3 国内外研究现状与发展趋势 1
1.4 本文研究方法与技术路线 2
第2章 柔性直流输电技术基础分析 3
2.1 柔性直流输电的基本原理 3
2.2 关键设备与系统架构 3
2.3 控制策略与运行特性 4
2.4 技术优势与局限性分析 4
2.5 柔性直流输电的经济性评估 5
第3章 柔性直流输电在电力系统的应用实践 6
3.1 分布式电源接入中的应用 6
3.2 海上风电并网的技术方案 6
3.3 孤岛供电系统的优化设计 7
3.4 大规模电网互联的应用案例 7
3.5 提升电网稳定性的具体措施 8
第4章 柔性直流输电技术的挑战与前景展望 9
4.1 技术瓶颈与解决方案探讨 9
4.2 新型拓扑结构的研究进展 9
4.3 智能化控制技术的发展方向 10
4.4 环境适应性与可靠性提升 10
4.5 未来应用场景与发展趋势 11
结论 12
参考文献 13
致 谢 14
